Sharp CP-SR421 Manuale Utente Pagina 234

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11. Options and peripheral devices
11 - 17
11.3.3 Connection example
POINT
EM2 is the same signal as EM1 in the torque control mode.
Connecting PR terminal of the brake unit to P terminal of the servo amplifier
results in brake unit malfunction. Always connect the PR terminal of the brake
unit to the PR terminal of the resistor unit.
(1) Combination with FR-BR resistor unit
(a) When connecting a brake unit to a servo amplifier
Emergency stop switch
24 V DC
3
10
EM2
DOCOM
DICOM
ALM
Servo amplifier
20
15
CN3
(Note 9)
MC
MCCB
(Note 1)
Power
supply
L1
L2
L3
L11
L21
ALM
RA1
OFF
MC
ON
MC
SK
P3
P4
(Note 3)
P+
N-
C
(Note 2)
(Note 7)
(Note 11)
N/-
P/+
BUE
SD
PR
B
C
A
SD
MSG
(Note 4)
(Note 6)
FR-BU2
FR-BR
P
PR
TH2
TH1(Noe 5)
(Note 8)
RA1
(Note 10)
Main circuit
power supply
Note 1. For power supply specifications, refer to section 1.3.
2. For the servo amplifier of 7 kW, always disconnect the lead wire of built-in regenerative resistor, which is connected to the P
and C terminals.
3. Always connect between P3 and P4 terminals. (factory-wired) Use either the power factor improving DC reactor or the power
factor improving AC reactor. When using the power factor improving DC reactor, refer to section 11.11.
4. Connect P/+ and N/- terminals of the brake unit to a correct destination. Incorrect connection results in servo amplifier and
brake unit malfunction.
5. Contact rating: 1b contact, 110 V AC_5 A/220 V AC_3 A
Normal condition: TH1-TH2 is conducting. Abnormal condition: TH1-TH2 is not conducting.
6. Contact rating: 230 V AC_0.3 A/30 V DC_0.3 A
Normal condition: B-C is conducting/A-C is not conducting. Abnormal condition: B-C is not conducting/A-C is conducting.
7. Do not connect more than one cable to each P+ to N- terminals of the servo amplifier.
8. Always connect BUE and SD terminals. (factory-wired)
9. Depending on the main circuit voltage and operation pattern, bus voltage decreases, and that may cause the forced stop
deceleration to shift to the dynamic brake deceleration. When dynamic brake deceleration is not required, slow the time to turn
off the magnetic contactor.
10. Turn off EM2 when the main power circuit power supply is off.
11. When wires used for L11 and L21 are thinner than wires used for L1, L2, and L3, use a molded case circuit breaker.
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